Bubble cap riser



H. C. GLITSCH BUBBLE CAP RISER A ril 3, 1951 Filed Sept. 29. 1947 Patented Apr. 3, 1951 TENT BUBBLE CAP RISER Ham ,0. Glitsch, Dallas, Tex., assignor to ,Glitsch .Enflneerinefiompmm Dallas, Tex-,a pa ne s ip App cation September 29, L947, Serial No. 776,737

4 Qlaims. (01.: 2611-1114) This invention relates to new and useful improvements in bubble cap risers'for use inrefining vessels.

One object ofthe invention is to provide-an 1mproved riser for a bubble cap adaptedto .be-supportedand secured in positionaby-coaction with 1 the bubble ,cap.

:Anothenobject of the-invention is to provide an improved bubble .cap. riser having means, at its upperportion for securing ,a bubble-cap thereto ,of the riser.

. An imp rtant. bj of th vention is to pr I A iparticular obj ect-ef the invention is to :pro- .-vide an -im-prov.ed riser, of the character -described, wherein the'upright. supports are-made 'aintegralwith the riser soras to be formed of normally waste material and eliminate-the necessity of attaching the same to-said riser.

further object of the inventionis to provide an improved riser, of the character described,

' which is pf such simple-construction 215111071138 -marmi -mire onomically :from :a minimum period of time.

A construetiQn..-de iened ;to;1carry 10111: :the .invention will be hereinafter described tqgether with otherifeatures of the invention.

The invention will be more readily understood from a reading .ofthe .following specification and :by reference v.to the accompanying drawing,

wherein an example of the inventionis ShOWn, and wherein:

Fig. 1 is 'a transverse, vertical, sectional view of a-riser constructed in accordance withthe .invention and shown mounted -with a bubble -.cap in;.a :riser. opening,

Fig. 2545' a .top. plan, partly. i'nasection, -.of .the mountedrzbubble. cap. and riser, I

Fig513 is: a. perspective. view of the wedgemem- 'ber tor locking the .riser. .to the-cap,

"Fig. axis-la detailed, sectionalsview, showingzthe connection hetween onepf-the riser arms and the cross bar,

Fig. -5 is a transverse,--vertical, sectional View of theriser prior toassembly of the cross bar,

and

Fig.6 is a transverse, vertical, sectional view of the lower portion of a slightly modified construction.

.10 -.=.without -mat eria11y decreasing the new capacity I .2 Inthe drawing, the numeral m designates a bubble cap assembly: which includes a riser -H and ,a bubble cap 12 mounted upon a trayrfloor or deck [-3 "ofca refining vessel (not shown -above sariserropening It. 'I'-he bubble cap-l2, which rests upon the deck l3, .isof conventionalconstruction and has a plurality ofslots l5 in its depending skirt portion. A-n elongated epening or slot l6-is formed in the top-of-the cap for .coacting with the-riser I l, as will Joe hereinafter more fully explained. .T-he riserincludes-a short tubular body or collar I! and has its lower end swe ed or flared outward-1y ato provide an -externah per p ra flan ..or lip t :for s nsesins heneathithe edge perton ;of the deck surround n th r s op nin I4.

As show-min; Fig. 6.1-2 trayzfioor or neck 1-9 of relatively-thin -metal maybe :usedin place of the deck .13 and -;has-:fianged openings 2'9 therein for reeeivingsthelower ends-ofthe risers. The mar- :g-ihal edgeyportionwofthe deck 19 surrounding eachopeningfZ-G is swaged or belled upwardly so as to coact with-,the-peripheral flange, he of the riser.

The riser bodyzi'i is formed fromvafiat sheet It is desirable The. .armsr2 l I project margin 22 501351130 .bedisposed inwardly of the .externalsdiameter .of the .bc'dyiin substantially parallel relation. An elongated opening .012'3'1017 5.23 is 'formed inleach .arm and extends longitu- 3d-inally 1 thereof. each arnr-mayrbe rounded :or bevelled as shown iby-the numeral 12. 5. The peripheral flange :t8 :may .beriorrned upon extrusion of: the cup or subsequent :thereto.

"to be supported by the riser arms 2 hand is of a iflat, :su'bstantially rectangular -shape. "Each end i of the. cross bar -ZE is of reducedwidth to provide :a short projection-or==tongue 2-6 for engaging within the slot 23 of one of the-arms. festlv-the cross bar .is of aleng'th substantially If desired, the upper "end of -A- transverse member or cross her 25 is adapted -Maniequal to the distance between the arms. A lateral connecting element or leg 2'! extends at a right angle from the medial portion of one longitudinal edge of the cross bar and is adapted to project above the arms when the tongues 26 are properly engaged within the arm slots 23. The leg 21 extends through the opening I6 of the bubble cap l2 when the latter is positioned over the riser and has a longitudinal slot or opening 28 therein for receiving a locking element 29 which overlies and bears against the top of said bubble cap. To facilitate insertion of the leg 21 in the opening 56, the extremit 30 of said ear is preferably rounded or bevelled.

As is most clearly shown in Fig. 3, the locking element 29 is preferably in the shape of an elongated, tapered wedge and may be formed of two bars 3| and 32, of relatively thin metal, spotwelded or otherwise secured together. When made in two pieces, the small ends of the bars may be spread to prevent accidental displacement of the element 29. A notch or recess 33 is formed in each longitudinal edge portion of the locking element adjacent its large end to facilitate removal thereof by a suitable tool (not shown). With the riser H extending upwardly through the opening IA of the deck 13, or the opening of the deck 59, and with the cross bar in place, the connection of the cap [2 to the leg 21 by the locking element fastens said riser within its opening. Due to the wedge action of the locking element, the peripheral flange 18 at the lower end of the riser is drawn upwardly into fluid-tight sealing engagement with the marginal edge portion of the deck surrounding the riser opening.

In order to facilitate insertion of the tongues 26 of the cross bar 25 in the slots 23 of the riser arms 2!, the extremities of said tongues are rounded or bevelled and particularly at the lower portions thereof as shown by the numeral 34 (Fig. 4). The tongues are formed by notching or cutting away the upper corners of the cross bar as shown at 35, whereby said tongues are positioned at the lower end portions of said cross bar. By relieving the upright wall or margin 36 of each notch 35 so that the same extends upwardly and outwardly at an inclination, one tongue may be engaged within its respective slo-t While the other tongue is disposed below the slot of the other riser arm. In this position, the cross bar is inclined and the inclined wall 36 of the notch bears against the inner surface of the riser arm. Due to the bevel 34 of the unengaged tongue extremity, the cross bar may be pushed or forced upward readily so as to move the unengaged tongue into engagement with its slot. Upon such engagement, the extremities of the tongues are punched with a die or other tool (not shown) so as to swage or stake said tongues into engagement with the slots of the riser arms as shown by the numeral 31.

From the foregoing, it is believed to be readily apparent that an efficient riser of simple inexpensive construction has been provided. Since the riser arms are formed from normally waste metal, the same are obtained at practically no cost and a saving is effected by eliminating the necessity of attaching separate arms to the riser. In addition, the riser may be readily assembled in a minimum period of time to further increase the economy of manufacture. As has been pointed out, the capacity or flow area of the riser is not materially decreased due to the positioning of the cross bar above the upper end of said riser.

The inward disposition of the arms relative to the body of the riser not only facilitates insertion of the riser in a deck opening but also eliminates the necessity of rebending said arms along a previous bend.

, The foregoing description of the invention is explanatory thereof and various changes in the size, shape and materials, as well as in the details of the illustrated construction may be made, within the scope of the appended claims, without departing from the spirit of the invention.

What I claim and desire to Secure by Letters Patent is:

1. A riser for a bubble cap including, an upright tubular body, a pair of diametricallyopposed arms made integral with and projecting above the upper end of the body, each arm having an elongated vertical opening therein, and a flat cross bar disposed in a vertical plane between the arms wholly above the upper end of said body and having its ends engaging within the openings thereof, said ends being distorted to prevent displacement of the cross bar, the cross bar having means intermediate its ends for connection with a bubble cap.

2. A riser as set forth in claim 1 wherein the end portions of the cross bar are reduced and rounded to facilitate engagement thereof within the openings of the riser arms.

3. In a bubble cap riser having substantially upright slotted supporting arms projecting above its upper end in opposed relation, a cross bar for connection with a bubble cap disposed between the riser arms wholly above the upper end of the riser, and tongues of reduced width carried by the ends of the cross bar for engaging within the slots of said riser arms, the ends of the tongues having bevelled portions at one side, the ends of said cross bar opposite the bevelled'portions of said tongues being relieved to cooperate with the bevelled ends of said tongues to facilitate insertion thereof in the arm slots.

4. A bubble cap riser including, an upright tubular body, a pair of opposed arms integral with and projecting above the upper end of the body, the arms being offset inwardly of said body and having vertical openings in their ofiset upper end portions, and a flat cross bar for connection with a bubble cap having reduced ends projecting through and secured in the openings, the cross bar extending in a vertical plane above the upper end of said body.

HANS C. GLI'ISCI-I.

REFERENCES CITED The following references are of record in the file of this'patent:

UNITED STATES PATENTS 

